Does the Outlook on your Windows 10 PC/Laptop start’s up slow? Here is how to fix


Here is how you can fix the slow startup of the Microsoft Outlook on your Windows 10 PC/Laptop

Microsoft Outlook is an integrated part of Microsoft Office and it’s a popular email management software. The experience with Outlook has not been always smooth for us. The outlook becomes sluggish or even freeze up completely. It’s annoying enough to wait for Outlook to open for a few minutes. Because you may use Outlook often, the delay may accumulate resulting in lost productivity.

And given the current health crisis, the adoption of Outlook has obviously increased, especially as more companies started working from home and transitioned to Microsoft’s remote-working products. The company says this occurs if UE-V, or the User Experience Virtualization system, is enabled on a system running Windows 10 version 1809 or newer. The problem only seems to affect Outlook 2016 and Outlook 2019, so those who use Microsoft Outlook as part of Office 365 won’t experience this huge loading time.

Here are the Symptoms provided by the company that indicates the slow loading of Outlook

Consider the following scenario:

  • You are using Outlook 2019 or Outlook 2016 on a computer that is running Windows 10, version 1809, or a later version of Windows.
  • You install a cumulative update for Windows 10 that is released after March 17, 2020.
  • You deploy User Experience Virtualization (UE-V) that has the Sync Method set to None.
  • You register the MicrosoftOutlook2016CAWinXX.xml UE-V template. For example, you register MicrosoftOutlook2016CAWin32.xml.

In this scenario, Outlook takes a minute to start and display its splash screen.

How to fix slow startup of Microsoft Outlook?

Method 1

Use the default Sync method SyncProvider.

The Sync method None is specific to workstations that have a permanent network connection to the SettingsStoragePath.

Method 2

If you cannot change to other Sync methods, you can change the behavior of UE-V by configuring the items in the corresponding template by following these steps:

  1. Go to the TemplateCatalog path that is defined in the UEV Configuration settings. If you use the default location, the path should be as follows:


  2. Update the following lines in the template, and then save and re-apply the new template:                        <Version>3</Version>                                                                                <Asynchronous>true</Asynchronous>

Note: For method 2, the template editing is applicable to only Office 2019 and Office 2016. It does not apply to earlier versions of Office. Changing the template for a version of Office other than Office 2019 or Office 2016 can cause crashes and undefined behavior in the program.

However, the issue only happens on Windows 10 version 1809 (October 2018 Update) and newer, which means that the latest version of the operating system, namely the May 2020 Update (version 2004) is impacted as well.

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